Leading authority in myrmecology research
Genius-level intellect
Size-shifting from nearly microscopic to ~100 feet gigantic (both at extremes)
Ability to transfer his size-shifting ability to other beings and objects
Bio-Energy Projection, also known as a Bio-Sting (particularly during his periods as Ant-Man & Yellowjacket)
Maintains strength of normal size in shrunken state
Flight using grafted wings (as Yellowjacket)
Telepathic communication with ants using a cybernetic helmet (as Ant-Man)
Superhuman strength, stamina, durability and mass in giant form (as Giant-Man, Goliath and Yellowjacket)

As a result, Pym was revived eight issues later as the costumed superheroAnt-Man who starred in the 13-page, three-chapter story "Return of the Ant-Man/An Army of Ants/The Ant-Man’s Revenge" in Tales to Astonish #35 (Sept. 1962). The character's adventures became an ongoing feature in the title. Issue #44 (June 1963) featured the debut of his socialite girlfriend and laboratory assistant Janet van Dyne. Janet adopted the costumed identity of the Wasp, and co-starred in Pym's subsequent appearances in Tales to Astonish. Wasp also on occasion acted as a framing-sequence host for backup stories in the title. In September 1963, Lee and Kirby created the superhero title The Avengers, and Ant-Man and Wasp were established in issue #1 as founding members of the team.

Decades later, Lee theorized as to why "Ant-Man never became one of our top sellers or had his own book," saying,

I loved Ant-Man, but the stories were never really successful. In order for Ant-Man to be successful, he had to be drawn this small next to big things and you would be getting pictures that were visually interesting. The artists who drew him, no matter how much I kept reminding them, they kept forgetting that fact. They would draw him standing on a tabletop and they would draw a heroic-looking guy. I would say, 'Draw a matchbook cover next to him, so we see the difference in size.' But they kept forgetting. So when you would look at the panels, you thought you were looking at a normal guy wearing an underwear costume like all of them. It didn't have the interest.[2]

Pym began what would be a constant shifting of superhero identities in Tales to Astonish, becoming the 12 ft (3.7 m) tall Giant-Man in issue #49 (Nov. 1963). Pym and van Dyne continued to costar in the title until issue #69 (July 1965), while simultaneously appearing in The Avengers until issue #15 (April 1965), after which the couple temporarily left the team.

Pym rejoined the Avengers and adopted the new identity Goliath in Avengers #28 (May 1966). Gradually falling to mental strain, he adopted the fourth superhero identity Yellowjacket in issue #59 (Dec. 1968). Pym reappeared as Ant-Man in Avengers #93 (Nov. 1971) and for issues #4–10 starred in the lead story of the first volume of Marvel Feature (July 1972 – July 1973). After appearing occasionally as Yellowjacket in the 1980s and battling mental and emotional issues, Pym would temporarily abandon a costumed persona. Pym joined the West Coast Avengers as a scientist and inventor in West Coast Avengers vol. 2, #21 (June 1987). The character returned to the Avengers as the superhero Giant-Man in The Avengers vol. 3, #1 (Feb. 1998). When the team disbanded after a series of tragedies, Pym, using the Yellowjacket persona again, took a leave of absence beginning with vol. 3, #85 (Sept. 2004).[3]

Following the death of van Dyne, a grieving Pym took on yet another superhero identity as the new iteration of Wasp, in tribute to the woman he had married and divorced by this time, in the one-shot publication Secret Invasion: Requiem (Jan. 2009). Giant-Man appeared as a supporting character in Avengers Academy from issue #1 (Aug. 2010) through its final issue #39 (Jan. 2013). Pym returned as the Wasp in the mini-series Ant-Man & The Wasp (Jan. 2011), and also appeared as a regular character in the 2010-2013 Secret Avengers series, from issue #22 (April 2012) through its final issue #37 (March 2013).

After Secret Avengers, Pym joined the Avengers A.I. after beating his creation, Ultron. Then, he appeared in many comic books like Daredevil (Vol. 3 and 4) and the graphic novel Rage of Ultron.

Biochemist Dr. Henry "Hank" Pym discovers an unusual set of subatomic particles he labels "Pym particles". Entrapping these within two separate serums, he creates a size-altering formula and a reversal formula, testing them on himself. Reduced to the size of an insect, he becomes trapped in an anthill before he eventually escapes and uses the reversal formula to restore himself to his normal size. Deciding the serums are too dangerous to exist, he destroys them.[4] Shortly afterward, he reconsiders his decision and recreates his serums. Pym's experience in the anthill inspires him to study ants, and he constructs a cybernetic helmet that allows him to communicate with and control them. Pym designs a costume made of unstable molecules to prevent bites or scratches from the ants, and reinvents himself as the superhero Ant-Man.[5] After several adventures, Pym is contacted by Dr. Vernon van Dyne asking for aid in contacting alien life. Pym refuses, but is attracted to Vernon’s socialite daughter Janet van Dyne. Vernon is subsequently killed by an alien criminal who teleports himself to Earth, and Janet asks for Pym's help in avenging Vernon's death. Pym reveals his secret identity to Janet, and uses Pym particles to graft wasp wings beneath her shoulders, which appear when Janet shrinks. Janet assumes the alias of the Wasp, and together they find and defeat Vernon's killer.[6] The pair become founding members of the superhero team known as the Avengers.[7]

Pym eventually adopts his first alternate identity as the 12-foot-tall Giant-Man.[8] He and the Wasp develop a romantic relationship.[9] In comics three decades later, a flashback reveals Pym adopted the Giant-Man identity out of feelings of inadequacy when compared to powerful teammates Iron Man and Thor.[10] Shortly afterward, Pym and van Dyne take a leave of absence from the Avengers.[11]

Pym adopts the new identity of Goliath upon returning.[12] A mishap traps the character in giant form for several issues, and affects his self-esteem.[13] After regaining control of his size-shifting ability, Pym creates the robotUltron that accidentally achieves sentience and becomes one of the Avengers's greatest foes.[14] During a botched experiment, Pym inhales chemicals that induce schizophrenia, and suffering from a personality crisis, reappears at Avengers Mansion as the cocky Yellowjacket, claiming to have disposed of Pym. Only the Wasp realizes it is Pym and takes advantage of his offer of marriage. Pym eventually recovers from the chemicals during a battle with the Circus of Crime at the wedding.[15]

Hank Pym debuts in his first Goliath costume in The Avengers #28 (May 1966). Cover art by Jack Kirby and Frank Giacoia.

Hank Pym debuts as Yellowjacket with an allegorical scene standing over himself in the second Goliath uniform on the cover of The Avengers #59 (Dec. 1968). Art by John Buscema and George Klein.

After several adventures with the Avengers, including another encounter with Ultron,[16] the pair take another leave of absence.[17] The heroes reencounter Hank Pym at the beginning of the Kree-Skrull War,[18] and once again as the Ant-Man persona and has a series of solo adventures.[19]

After aiding fellow superhero team known as the Defenders[20][21] as Yellowjacket, Pym returns to the Avengers.[22] He is eventually captured by an upgraded Ultron that brainwashes his creator, causing the character to regress to his original Ant-Man costume and personality — arriving at Avengers Mansion, thinking it to be the very first meeting of the team. Seeing several unfamiliar members, Pym attacks the team until stopped by the Wasp.[23] After Ultron's brainwashing is reversed, Pym rejoins the Avengers as Yellowjacket.[24] Pym is forced to briefly leave the team when the roster is restructured by government liaison Henry Peter Gyrich.[25]

Also at this time, he noticed Scott Lang's theft of the Ant-Man suit. After Darren Cross's defeat and aware of Lang's use of the stolen goods, Pym let Lang keep the equipment albeit only to uphold the law.[26]

Returning 14 issues later,[27] Hank Pym participates in several missions until, after demonstrating hostile behavior toward Janet van Dyne, he attacks a foe from behind once the opponent had ceased fighting. Captain America suspends Yellowjacket from Avengers duty pending the verdict of a court-martial. Pym suffers a mental breakdown and concocts a plan to salvage his credibility by building a robot, Salvation-1, and programming it to launch an attack on the Avengers that he will stop using the robot’s weakness at the critical moment, in hopes of regaining his good standing. The Wasp discovers the plan and begs Pym to stop, whereupon he strikes her. Jim Shooter, the writer of this story, says he intended only that Pym accidentally strike her while gesturing at her dismissively, and that artist Bob Hall misinterpreted.[28] Pym is subsequently expelled from the Avengers,[29] and Janet divorces him.[30]

Left penniless, Pym is manipulated by an old foe, the presumed-dead Egghead tricking him into stealing the national reserve of the metal adamantium. Pym is confronted by the Avengers (whom he had covertly summoned), and after being defeated is blamed for the theft, as Egghead erases all evidence of his involvement. Blaming an ostensibly dead villain is taken as further proof of Pym’s madness and he is incarcerated.[31] During Pym’s imprisonment, Janet has a brief relationship with Tony Stark.[32] Egghead later involves himself, and while attempting to kill Pym is himself accidentally killed by Hawkeye as the latter's brother had been murdered by Egghead years ago. With the real perpetrator exposed, Pym is cleared of all charges. After bidding farewell to Janet and his teammates, Pym leaves to devote his full-time to research.[33]

Pym reappears in the West Coast Avengers, first in an advisory role,[34] and then as a full member in a non-costumed capacity.[35] He begins a short relationship with teammate Tigra,[36] and after a verbal taunting by old foe Whirlwind contemplates suicide, but is stopped by the heroine Firebird.[37] Pym and Janet eventually resume a romantic relationship.[38]

The character eventually returns to the Avengers, joining the East Coast team as Giant-Man.[39] The pair, together with many of the other Avengers, apparently sacrifice themselves to stop the villain Onslaught, but actually exist in a pocket universe for a year before returning to the mainstream Marvel Universe.[40]

Hank Pym returns and aids the team as Giant-Man,[41] and makes a significant contribution by defeating criminal mastermind Imus Champion[42] and his flawed creation Ultron, simultaneously overcoming his old issues of guilt over Ultron's crimes — revealed to be due to him having used his own brain patterns to create Ultron, and so believing that Ultron's attitude reflects his darker side.[43]

During the Destiny War between Kang the Conqueror and Immortus, two versions of Hank Pym are drawn in: Giant-Man of the present and Yellowjacket immediately prior to his marriage to Janet van Dyne.[44] Yellowjacket briefly betrays the team to Immortus and the powerful Time-Keepers try to create a timeline where he will not turn back into Pym,[45] but he rejects this decision in time to help his allies.[46] Observing the final battle, Libra - who brought the team together by using the Destiny Force to tap into his subconscious awareness of the cosmic balance - reflects that both Pyms were necessary so that Yellowjacket's betrayal could bring the team into the right position to attack the Time-Keepers, while Pym's presence as Giant-Man both provided a stable support and irritated Yellowjacket to provoke his own actions.[47]

Back in the present, an encounter with Kulan Gath results in Pym being split into his two personas of Pym and Yellowjacket, after a spell cast by Gath temporarily transforms Pym into a swashbuckler-style Yellowjacket, followed by the Yellowjacket persona manifesting a physical presence from the extradimensional bio-mass Pym uses to grow. After the Giant-Man Pym spends some time appearing almost emotionally stunted, reciting facts with no sense of emotional depth even when facing the new threat of a supercharged Count Nefaria, the Yellowjacket Pym replaces him, only for his impulsive nature to making a situation worse when Diablo turns an entire village into variations of the Hulk, Yellowjacket's plan to stop the Hulks resulting in them merging into one massive Hulk before he can shrink it down to a more manageable level. The two versions begin to deteriorate from being apart, but are restored when the Wasp helps the two halves realize they need each other.[48] Pym is eventually able to resolve his problems and adopts his Yellowjacket persona once again.[49]

After the events of the "Avengers Disassembled" storyline, Pym takes a leave of absence,[50] and in the one-shot title Avengers: Finale, the character and Janet leave for England to rekindle their relationship.[51] Pym and Janet's relationship fails and it is revealed in flashback during the Secret Invasion storyline that he has been replaced by an alien of the shapeshifting Skrull race.[52] The impostor Yellowjacket, the Skrull Criti Noll, is a central character in the Civil War storyline, joining those heroes that support the Superhuman Registration Act. . At the conclusion of the Civil War, the impostor is named "Man of the Year" by Time magazine for his role in freeing several captive anti-registration heroes.[53]

Noll becomes one of the administrators at Camp Hammond, a U.S. military base in Stamford, Connecticut, for the training of registered superheroes in the government program The Initiative.[54] He ends the attempt at reconciliation with Janet and begins a romantic relationship with Tigra before eventually being exposed and defeated by the hero Crusader.[55] Following a final battle between Earth's heroes and the Skrulls, the real Pym is found with other "replaced" heroes in a Skrull vessel. After Janet is seemingly killed in battle,[56] Pym takes on a new superhero persona, the Wasp. in tribute to her.[57] He rejoins the Avengers[58] and eventually leads the team.[59]

Hank Pym creates Avengers Academy, a program to help train young people with newly acquired superpowers.[62] Pym returns to his Giant-Man identity in Avengers Academy #7.[63] Pym later joins the superhero team known as the Secret Avengers.[64] When a future version of Pym's sentient robot Ultron conquers the world of the present in the "Age of Ultron" storyline, a time-travel plan involving Wolverine and the Invisible Woman succeeds in having the past Pym make a change in his creation of Ultron, which destroys the robot with a computer virus.[65]

Pym and Monica Chang, A.I. Division Chief of the espionage agency S.H.I.E.L.D., assemble a new team called the Avengers A.I., consisting of Pym, Victor Mancha (his grandson), the Vision, and a Doombot.[66] The team is later joined by Alexis,[67] who is eventually revealed to be one of six sentient A.I.s to be spawned from the Ultron virus along with Dimitrios.[67] Months later, Pym, again using the Yellowjacket identity, is shown as a member of the Illuminati.[68] Later, an accident merges Pym and Ultron. After the hybrid human/machine eventually abandons Earth, a funeral service is held in Pym's honor,[69] and Scott Lang receives one of Hank's labs.[70]

Pym/Ultron resurfaces after helping the crew of a spaceship under attack. Ultron is now Pym's armor rather than being merged with him.[71] Back on Earth, he rejoins the Avengers, but his teammates and others discover Ultron has gained control and is impersonating Pym.[72] The Avengers end up defeating him by plunging him into the sun, but both Hank and Ultron survive and continue to do battle with one another internally.[73]

Hank is later revealed to have had a daughter named Nadia through his ex-wife Maria Trovaya, and Nadia became the latest Wasp.[74]

During the Secret Empire storyline, the Ultron/Hank Pym had set up a base in a unidentified forest. Upon being alerted by the approach of Sam Wilson's task force by a robot version of Edwin Jarvis, the Ultron/Hank Pym decides to give his "family" a warm welcome.[75] When Tony Stark A.I.'s team and Captain America's team confront each other, they are captured by the Ultron/Hank Pym who forces both teams to sit at a dinner table. The Ultron/Hank Pym argues that he is doing this because the Avengers have become less of a family over the years as so many of them jump to obey Captain America or Iron Man despite past experience confirming that this should be a bad idea, but the Tony Stark A.I. counters that the only reason the team failed as a family was because of Hank Pym's attack on Wasp. Outraged, the Ultron/Hank Pym nearly attacks the other heroes, but Scott Lang is able to talk him down by arguing that Hank Pym remains his own inspiration. The Ultron/Hank Pym allows the Tony Stark A.I.'s team to leave with the fragment, arguing that he will leave Captain America's plans with Hydra alone as it appears to be the best chance for world peace.[76]

After constant experimentation with size-changing via ingested capsules and particle-filled gas, Pym is eventually able to change size at will,[volume & issue needed] and mentally generate Pym particles to change the sizes of other living beings or inanimate objects.[volume & issue needed] Pym retains his normal strength when "ant" size, and possesses greatly increased strength and stamina when in "giant" form, courtesy of the increased mass. Pym's costume is synthetic stretch fabric composed of unstable molecules and automatically adapts to his shifting sizes.

Pym also uses a cybernetic helmet he created for achieving rudimentary communication with ants and other higher order insects. As Yellowjacket, then later as Wasp, Pym wears artificial wings and has bio-blasters called "stingers" built into his gloves. He took up the Wasp mantle in memory of Janet, who was believed to be dead at the time.[58]

Pym also carries a variety of weaponry, provisions, and scientific instruments, which are shrunken to the size of microchips and stored in the pockets of his uniform.[volume & issue needed]

During his stay with the West Coast Avengers, Pym constructed a one-man-vehicle with artifical intelligence named Rover.[volume & issue needed] Rover is able to communicate with Pym, and is capable of flight and discharging energy and acid.

In an alternate future in the miniseries The Last Avengers Story #1-2 (Nov. 1995), Ultron wishes for a decisive victory over the Avengers. After eliminating the team, he has Hank Pym gather a new group. After recruiting other heroes and mercenaries, Pym leads them to victory though fatalities are heavy on both sides.[volume & issue needed]

Hank Pym is featured in several of the Marvel Zombies miniseries, appearing as one of the cannibalistic zombies in Marvel Zombies #1-5 (Feb.-June 2006), Marvel Zombies 2 #1-5 (Dec. 2007 - April 2008) and Marvel Zombies Return #4 (Oct. 2009). Although he experiences a brief return to morality in Marvel Zombies 2, throughout most of the series he is presented as being comfortable with his transformation, noting to a captured Black Panther that he thinks he might still eat people even if he was cured of the infection,[volume & issue needed] and setting out to consume a new universe even after learning that the hunger can be beaten.[volume & issue needed] He is opposed in his expansion efforts by the zombie Spider-Man,[volume & issue needed] who finally manages to defeat his own forces with nanites configured to 'eat' zombie flesh.[volume & issue needed]

In the post-apocalyptic "Old Man Logan" storyline, Hank Pym (as Giant-Man) is one of the numerous superheroes killed by the Red Skull's army of villains. Decades after his demise, a Connecticut settlement dubbed "Pym Falls" is built around his massive skeleton.[90] In addition, his Ant-Man helmet is shown in the possession of a young boy named Dwight, who uses it to command an army of ants in order to enforce the payment of tolls across a bridge.[91]

It was shown that during the fight in Connecticut, Giant-Man became enraged when the Wasp was killed by Hobgoblin. This led him to crush Vulture with his hands and step on Crossbones. As he charged the villains, Avalanche used his abilities to shake the ground. Moloids emerged and attack Giant-Man, causing him to fall to the ground.[92]

The Ultimate Marvelimprint version of Henry "Hank" Pym is portrayed as a brilliant but mentally fragile scientist. He takes Prozac to battle his mental instability and depressive episodes. He gains his Giant-Man abilities after transfusing the blood of his mutant wife Janet Pym. The character is expelled from the Ultimates after his abusive behavior ends his marriage and his Giant-Man serum is used by S.H.I.E.L.D. to make an entire Giant-Men team. Now a pariah, he briefly joins with both pseudo heroes and then anti-American villains in his Ant-Man persona. The character eventually rejoins the Ultimates in his Yellowjacket identity. During the events of "Ultimatum" storyline, he sacrifices himself against the Multiple Man's suicide bomber duplicates to save the remaining Ultimates' lives.[93]

After his death, the character's various formulas/devices are still in usage: the Giant-Man formula further replicated by S.H.I.E.L.D. to have multiple Giant-Women agents while his technology is eventually acquired by HYDRA.[94]

Giant-Man was later revived alongside his fellow Ultimates when the Superflow that separated the different universes was destroyed by Maker and High Evolutionary.[95]

Henry Pym appears in issue 13 of Marvel Adventures: The Avengers as a scientist working for Janet's father with no superhero identity, and was the one who gave his wife superpowers. He is visited by Spider-Man and Storm when Janet van Dyne (Giant-Girl in this continuity) falls under insect mind-control. He tells them how to free her (severing the antennae on her mask), gives her a new costume, and uses an insect telepathy helmet (identical to his Earth-616 Ant-Man helmet) to create an illusion of several giant-sized people, scaring the insects away.[volume & issue needed] He returns in issue 20, becoming Ant-Man. He not only joins the team but begins a relationship with Janet.

Michael Douglas portrays Hank Pym in the Marvel Studios film Ant-Man.[101][102][103]Dax Griffinstood in as a young version in a flashback sequence.[104] In the film, Pym was an agent of S.H.I.E.L.D. until his wife Janet van Dyne shrunk to the Quantum Realm during one of their missions and discovered that the organization was trying to replicate his Pym Particle formula. After quitting, he builds his own company Pym Technologies, but is ousted as CEO by his former protege Darren Cross and his estranged daughter Hope van Dyne. Although they still kept an eye on Cross of any suspicious activity, Cross comes close to perfecting Pym's formula and plans to sell the Yellowjacket suit, Pym manipulated former thief Scott Lang into stealing the suit and eventually instructing Scott to be the new Ant-Man to stop Cross. He refused to have Hope in danger despite his daughter's superior experience, afraid that he'd lose Hope like Janet. After discovering that Ant-Man had returned from the Quantum Realm following his fight with Yellowjacket, Pym believed that Wasp is still alive there. In the mid-credits scene, Pym presents an updated Wasp costume to Hope, deciding to give it to his daughter.

Hank Pym appears in the novelization of Spider-Man 2. It's him instead of a nameless female scientist who asks Dr. Octo Octavius how he plans to control his metallic tentacles. Upon being informed of the inhibitor chip, he states having a cybernetic helmet which would make the process easier. After the failure of Octavius' experiment, Pym goes over to Otto to confirm he's alive, while implying that his wife Rosalie is dead. Additionally, Octavius described Pym as being a giant in a field where everyone else are ants.[110]

Hank Pym was ranked as the 93rd greatest comic book character by Wizard magazine.[111]IGN listed Hank Pym as the 67th greatest comic book hero,[112] and 16th in their list of "The Top 50 Avengers".[113]